At first he found inspiration for his paintings and watercolours from the fortifications, construction works sites, demolitions of houses and of blue collar Paris (examples include Le Canal St Martin, in the permanent collection of the Musee Carnavalet). His landscapes are strong, precise, large dense masses. The same qualities can be noted in the views of Brittany and the Pyrenees and even London where he spent some time. There is a spark of Turner about the present work and perhaps even Monet too. In 1894 Prunier was given the commission of the decoration of the Church of St Palais in the Pyrenees.